What is a Transmission Steel? (Definition & Properties)
Steel bars made from grades such as S235JR (St37-2) and SAE 1008 that have undergone a cold drawing process are referred to as drive shafts or transmission steels. Structural steels and quenched & tempered steels that have been shaped through one or more dies at room temperature are called "cold-drawn steel" or "transmission steel."
The purpose of the cold drawing process is to increase the tensile strength and yield strength of the material without requiring heat treatment. When the mechanical properties of hot-rolled sheet metal need to be improved solely by reducing thickness, cold rolling is used instead of cold drawing. These materials are referred to as cold-rolled steels.
If a precise surface is not required, cold-drawn or cold-rolled material can be used without additional processing. Another advantage of cold drawing is that it enhances the machinability of the steel by facilitating chip breaking. If a high cross-sectional reduction is applied, stress-relief annealing is necessary.
What Material is Used for a Transmission Steel? (Material Selection & Properties)
The drive shaft is made from structural steels and quenched & tempered steels. These are steels that have undergone a cold drawing process, being shaped through dies with specific dimensions at room temperature.
What Are the Dimensions of a Transmission Steel? (Sizes & Tolerances)
The diameters of drive shafts range between 5 mm and 100 mm.
How Is a Transmission Steel Manufactured? (Detailed Production Process)
The transmission steel, also known as transmission steel, is manufactured using the cold drawing process. Cold-worked steel is essentially hot-rolled steel that has undergone further processing. Cold drawing offers benefits such as avoiding heating, excellent dimensional tolerance, uniform surface quality, and high mechanical strength.
First, hot-rolled steel is cold-drawn through a die or descaled. Before the shaping process, the bars must undergo surface cleaning. Additionally, acid pickling may be applied before descaling. Structural and quenched & tempered steels that have been shaped through one or more dies at room temperature (25°C) are commercially referred to as transmission steels.
The shaft is a crucial mechanical component that supports elements such as pulleys, gears, couplings, sprockets, flywheels, and rotors, enabling their rotation. Made from high-strength materials, the drive shaft enhances the mechanical properties of the material, ensuring more stable and durable structures.
What Surface Tolerance Does Transmission Steel Have? (Precision & Quality)
Transmission steels are produced with h9 or h11 tolerances.
Where Are Transmission Steels Used? (Applications)
Due to their high machinability and low cost, transmission steels are widely used. They are utilized in the automotive industry, mechanical engineering, household appliances, construction, and the defense industry. They are also preferred for precision applications such as high-speed motor shafts, ball bearings, laboratory instruments, and air measurement devices.
What Are the Properties of a Transmission Steel? (Mechanical & Physical Characteristics)
- They are materials with a round cross-section.
- They have high weldability.
- They do not require heat treatment to increase tensile strength and yield strength.
- They can be easily machined on CNC lathes and milling machines.
- They are more cost-effective compared to other steels.
- Their mechanical properties include hardness, tensile strength, impact toughness, elongation, and compression resistance.
- They exhibit high impact toughness and elongation without breaking.
- They are suitable for surface hardening.
- They have high corrosion resistance.
- They exhibit a high coefficient of thermal expansion and good heat absorption capability.
How Are Transmission Steel Prices Determined? (Costs & Pricing Factors)
The prices of transmission steels vary depending on the diameter. You can check our competitive prices based on your dimensional and quality requirements on our website hascelik.com.
How to Calculate the Weight of a Transmission Steel? (Weight Calculation & Formula)
To calculate the weight of the drive shaft, the length and diameter must be measured in millimeters, and the material density must be known. The prices of drive shafts are also determined based on these calculations.
How Do the Mechanical Properties of Transmission Steels Change? (Improvements Through Cold Drawing)
The mechanical properties of the drive shaft improve through the cold drawing process. Tensile strength and yield strength increase compared to the hot-rolled state, while elongation to fracture decreases.
